Protection: $60 (96) (missing)

Compiled BASIC with BASIC code identical to the protection of the non-compiled BASIC games.
The disk contains an unused file with BASIC source code which is probably the loader.

Due to the obfuscation-by-compilation I could not find the protection code but traced me through until I found the location from where the sector number is read.


Identical protection:
        SSI BASIC Comp.a


Cracked by:
 - read sector $0 instead of $60


Routine in sector $229 (553) at offset $11410:
----------------------------------------------------------

65DC: 00 0A 03 01 60                    # sector $60
----------------------------------------------------------
65DC: 00 0A 03 01 00                    # sector $0

65E7: 68                PLA             # called from BASIC
65E8: 20 53 E4          JSR DSKINV      # sector $60, buffer $600
65EB: 60                RTS


BASIC code in sector $213 (531) at offset $10910:
----------------------------------------------------------
GSTART.BAS

$1F48: 1 REM GSTART{1B} {end $1F54}
$1F54: 10 QS=PEEK(742): Q=QS-17: POKE 742,Q: Q=35800: QN=44850: GOSUB 7000 {end $1FA2}


$2F3F: 7000 POKE 702,64: POKE 694,0: POKE 580,1: POKE 16,64: POKE 53774,64 {end $2F9C}
$2F9C: 7005 POKE 769,1: POKE 770,82: POKE 772,0: POKE 773,6: POKE 778,255: POKE 779,0 {end $300B}
$300B: 7010 T=USR(ADR("h S{E4}`")): IF PEEK(771)<>1 THEN 7040 {end $303D}

$303D: 7020 POKE 778,96: T=USR(ADR("h S{E4}`")): IF PEEK(771)=1 THEN 7040 {end $3081}
----------------------------------------------------------
$303D: 7020 POKE 778,0: T=USR(ADR("h S{E4}`")): IF PEEK(771)=1 THEN 7040 {end $3081}

data on disk at offset $1095b
----------------------------------------------------------
        org     0E 40 96 00 00 00 00 14
        --
        crack   0E 40 00 00 00 00 00 14

$3081: 7030 RETURN  {end $3087}
$3087: 7040 A$="D:AUTORUN.SYS": GOTO 990 {end $30A8}


DISKMAP - 40 TRACKS - 18 SECTORS

 1 *****|**** ********** ********** **********
 2 *****|**** ********** ********** **********
 3 *****|**** ********** ********** **********
 4 *****|**** ********** .********* **********
 5 *****|**** ********** .********* **********
 6 *****|**** ********** .********* **********
 7 *****|**** ********** .********* **********
 8 *****|**** ********** .********* **********
 9 *****|**** ********** ********** **********
10 *****|**** ********** ********** **********

11 *****|**** ********** ********** **********
12 *****|**** ********** ********** **********
13 *****|**** ********** ********** **********
14 *****|**** ********** ********** **********
15 *****|**** ********** ********** **********
16 *****|**** ********** ********** **********
17 *****|**** ********** ********** **********
18 *****|**** ********** ********** *********.

* OK/DATA  .,;: OK/EMPTY ($00, $1A, $FF, other)
| MISSING  d DELETED  C BAD CRC  l/L LONG/l+DELETED


crack.rup
NINJA1T
raw 7fffffff 9b5774f4a56f35ab8d3a028979691418 4b34e4e0d6b3891f0719a14657d082557b749a7b
1095d 00
1148a 00

uncrack.rup
NINJA1T
raw 7fffffff cac7b90d1d8583339b2df9574e5787d7 c57fa6f065e5d0c9eae1c38dbf2754761bc7468d
1095d 96
1148a 60

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